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Shimano availability?
So COVID has shot the groupsets of Shimano. I am not a dura-ace person and I still shift with cables. Are they going to be making or shipping Ultegra or 105 stuff. Maybe it all is dried but and in the end looking for it will never come. I would even go to a disk brake set up if I could find 105 stuff. I have Ultegra now but frankly 105 is just as good.
Deacon mark |
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#2
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Shimano availability?
On 6/7/2021 6:11 PM, Mark cleary wrote:
So COVID has shot the groupsets of Shimano. I am not a dura-ace person and I still shift with cables. Are they going to be making or shipping Ultegra or 105 stuff. Maybe it all is dried but and in the end looking for it will never come. I would even go to a disk brake set up if I could find 105 stuff. I have Ultegra now but frankly 105 is just as good. Deacon mark Depends on which part. Deliveries are out through December 2021 mostly but some items as soon as September and others into next year. There won't be 'on the shelf' for a very long while. As with bicycles and some tires, backorders are mostly presold by the time they arrive. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#3
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Shimano availability?
On Mon, 7 Jun 2021 16:11:51 -0700 (PDT), Mark cleary
wrote: So COVID has shot the groupsets of Shimano. I am not a dura-ace person and I still shift with cables. Are they going to be making or shipping Ultegra or 105 stuff. Maybe it all is dried but and in the end looking for it will never come. I would even go to a disk brake set up if I could find 105 stuff. I have Ultegra now but frankly 105 is just as good. Deacon mark While you're waiting, you might consider making your own parts (and selling extra parts to others in your situation). For example: https://stlbase.com/browse/bicycle+shimano/ https://www.yeggi.com/q/shimano/ Unfortunately, making the stamped steel cassette gears will probably be too difficult. However, it might be possible to use a water jet cutter to make the chainrings. https://www.google.com/search?tbm=isch&q=waterjet+cutter+bicycle+chainrin g Mo https://www.google.com/search?q=3d+printed+bicycle+parts&tbm=isch -- Jeff Liebermann PO Box 272 http://www.LearnByDestroying.com Ben Lomond CA 95005-0272 Skype: JeffLiebermann AE6KS 831-336-2558 |
#4
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Shimano availability?
On 6/7/2021 10:52 PM, Jeff Liebermann wrote:
On Mon, 7 Jun 2021 16:11:51 -0700 (PDT), Mark cleary wrote: So COVID has shot the groupsets of Shimano. I am not a dura-ace person and I still shift with cables. Are they going to be making or shipping Ultegra or 105 stuff. Maybe it all is dried but and in the end looking for it will never come. I would even go to a disk brake set up if I could find 105 stuff. I have Ultegra now but frankly 105 is just as good. Deacon mark While you're waiting, you might consider making your own parts (and selling extra parts to others in your situation). For example: https://stlbase.com/browse/bicycle+shimano/ https://www.yeggi.com/q/shimano/ Unfortunately, making the stamped steel cassette gears will probably be too difficult. However, it might be possible to use a water jet cutter to make the chainrings. https://www.google.com/search?tbm=isch&q=waterjet+cutter+bicycle+chainrin g Mo https://www.google.com/search?q=3d+printed+bicycle+parts&tbm=isch A bit more seriously: I've sometimes thought it would be nice to have access to a CNC mill, to refurbish freewheel cogs. It would keep my ancient SunTour freewheels going. -- - Frank Krygowski |
#5
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Shimano availability?
On Mon, 7 Jun 2021 23:06:55 -0400, Frank Krygowski
wrote: On 6/7/2021 10:52 PM, Jeff Liebermann wrote: On Mon, 7 Jun 2021 16:11:51 -0700 (PDT), Mark cleary wrote: So COVID has shot the groupsets of Shimano. I am not a dura-ace person and I still shift with cables. Are they going to be making or shipping Ultegra or 105 stuff. Maybe it all is dried but and in the end looking for it will never come. I would even go to a disk brake set up if I could find 105 stuff. I have Ultegra now but frankly 105 is just as good. Deacon mark While you're waiting, you might consider making your own parts (and selling extra parts to others in your situation). For example: https://stlbase.com/browse/bicycle+shimano/ https://www.yeggi.com/q/shimano/ Unfortunately, making the stamped steel cassette gears will probably be too difficult. However, it might be possible to use a water jet cutter to make the chainrings. https://www.google.com/search?tbm=isch&q=waterjet+cutter+bicycle+chainrin g Mo https://www.google.com/search?q=3d+printed+bicycle+parts&tbm=isch A bit more seriously: I've sometimes thought it would be nice to have access to a CNC mill, to refurbish freewheel cogs. It would keep my ancient SunTour freewheels going. Way back when we used to make gears by machining the gear blank and then mounting the blank on a "dividing head" and mill the teeth one at a time. Cutting teeth for a chain drive system would be simpler as the teeth would all be the same size regardless of the diameter instead of varying with the pitch as gear teeth do. -- Cheers, John B. |
#6
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Shimano availability?
On 6/7/2021 10:06 PM, Frank Krygowski wrote:
On 6/7/2021 10:52 PM, Jeff Liebermann wrote: On Mon, 7 Jun 2021 16:11:51 -0700 (PDT), Mark cleary wrote: So COVID has shot the groupsets of Shimano. I am not a dura-ace person and I still shift with cables. Are they going to be making or shipping Ultegra or 105 stuff. Maybe it all is dried but and in the end looking for it will never come. I would even go to a disk brake set up if I could find 105 stuff. I have Ultegra now but frankly 105 is just as good. Deacon mark While you're waiting, you might consider making your own parts (and selling extra parts to others in your situation). For example: https://stlbase.com/browse/bicycle+shimano/ https://www.yeggi.com/q/shimano/ Unfortunately, making the stamped steel cassette gears will probably be too difficult. However, it might be possible to use a water jet cutter to make the chainrings. https://www.google.com/search?tbm=isch&q=waterjet+cutter+bicycle+chainrin g Mo https://www.google.com/search?q=3d+printed+bicycle+parts&tbm=isch A bit more seriously: I've sometimes thought it would be nice to have access to a CNC mill, to refurbish freewheel cogs. It would keep my ancient SunTour freewheels going. Is that even possible? Any material removal just reduces the root diameter, right? -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#7
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Shimano availability?
On Mon, 7 Jun 2021 23:06:55 -0400, Frank Krygowski
wrote: On 6/7/2021 10:52 PM, Jeff Liebermann wrote: On Mon, 7 Jun 2021 16:11:51 -0700 (PDT), Mark cleary wrote: So COVID has shot the groupsets of Shimano. I am not a dura-ace person and I still shift with cables. Are they going to be making or shipping Ultegra or 105 stuff. Maybe it all is dried but and in the end looking for it will never come. I would even go to a disk brake set up if I could find 105 stuff. I have Ultegra now but frankly 105 is just as good. Deacon mark While you're waiting, you might consider making your own parts (and selling extra parts to others in your situation). For example: https://stlbase.com/browse/bicycle+shimano/ https://www.yeggi.com/q/shimano/ Unfortunately, making the stamped steel cassette gears will probably be too difficult. However, it might be possible to use a water jet cutter to make the chainrings. https://www.google.com/search?tbm=isch&q=waterjet+cutter+bicycle+chainrin g Mo https://www.google.com/search?q=3d+printed+bicycle+parts&tbm=isch A bit more seriously: Did you perhaps notice the large number of small Shimano components that are available for downloading or purchase? I may not be very serious, but others seem to think it might be a good idea. I've sometimes thought it would be nice to have access to a CNC mill, That's also what I thought. So, I volunteered to update the CNC on a friend's vertical mill: http://www.learnbydestroying.com/jeffl/pics/CNC-conversion/index.html It works and has been running for a few years. However, he won't let me use it because he has it setup to produce some rather profitable parts for a paying customer. If I tear down the setup to make my parts, it's quite a project getting the mill setup again to make paying parts. So, rather than make more efficient and accurate fixturing, he just leaves it ready for the next paying order. I could have done better by buying a small bench top mill. to refurbish freewheel cogs. It would keep my ancient SunTour freewheels going. If you're going to go through all that trouble refurbishing gears, you might as well make new gears from scratch. As long as you're removing metal, it can all be done on a mill or lathe with an indexing or dividing head: https://www.google.com/search?q=indexing+head&tbm=isch It might be tempting to sell a dividing head specifically drilled for bicycle gears. Twisting the teeth slightly to make shifting possible on a huge corn cob freewheel will probably require a fixture and press, or some kind of stamping machine. I'm not sure if the resulting gears will require heat treating. Purchasing all the required equipment seems rather uneconomical, but borrowing the machine time in a hobbyist or "makers" shop might be worthwhile. As for refurbishing the teeth on existing gears, that might work even if the teeth have developed a "hook". Adding metal is possible with a MIG welder and trimming can be done with most anything that removes metal, such as a gear tooth cutter, rotary grinder, or round hand file. There's quite a bit on gear repair on YouTube. -- Jeff Liebermann PO Box 272 http://www.LearnByDestroying.com Ben Lomond CA 95005-0272 Skype: JeffLiebermann AE6KS 831-336-2558 |
#8
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Shimano availability?
On 6/8/2021 8:58 AM, AMuzi wrote:
On 6/7/2021 10:06 PM, Frank Krygowski wrote: A bit more seriously: I've sometimes thought it would be nice to have access to a CNC mill, to refurbish freewheel cogs. It would keep my ancient SunTour freewheels going. Is that even possible?Â* Any material removal just reduces the root diameter, right? I don't think so. AFAICT there's no wear at the root diameter. My idea would be to replicate the profile of a brand new driven surface (the back side of the tooth) but rotated a couple degrees clockwise. The result should be a tooth shaped like the original, but not as wide circumferentially - if that makes sense. BTW, I'm not claiming this makes practical sense. My SunTour freewheel board has dozens of cogs (but not some favorites), and other freewheels are still available. -- - Frank Krygowski |
#9
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Shimano availability?
On Tue, 8 Jun 2021 11:59:07 -0400, Frank Krygowski
wrote: On 6/8/2021 8:58 AM, AMuzi wrote: On 6/7/2021 10:06 PM, Frank Krygowski wrote: A bit more seriously: I've sometimes thought it would be nice to have access to a CNC mill, to refurbish freewheel cogs. It would keep my ancient SunTour freewheels going. Is that even possible?* Any material removal just reduces the root diameter, right? I don't think so. AFAICT there's no wear at the root diameter. My idea would be to replicate the profile of a brand new driven surface (the back side of the tooth) but rotated a couple degrees clockwise. The result should be a tooth shaped like the original, but not as wide circumferentially - if that makes sense. I don't think it will work. By narrowing the tooth and retaining the original profile, you widen the slot width making it flat instead of rounded to fit the chain rollers. If you cutting radially into the slot between teeth, you'll weaken the gear. As long as the chain is taught, your idea will work. However, when chain tension is released, there's nothing keep the roller centered between two adjacent teeth. My guess(tm) is the chain will slide forwards and backwards, miss gear changes, or do something undesirable. BTW, I'm not claiming this makes practical sense. My SunTour freewheel board has dozens of cogs (but not some favorites), and other freewheels are still available. Yep. We've successfully transitioned from a very practical "safety" bicycle, through various levels of absurdity, and are now working on the ridiculous. Welcome to my world. -- Jeff Liebermann PO Box 272 http://www.LearnByDestroying.com Ben Lomond CA 95005-0272 Skype: JeffLiebermann AE6KS 831-336-2558 |
#10
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Shimano availability?
On Tuesday, June 8, 2021 at 7:58:04 AM UTC-5, AMuzi wrote:
On 6/7/2021 10:06 PM, Frank Krygowski wrote: On 6/7/2021 10:52 PM, Jeff Liebermann wrote: On Mon, 7 Jun 2021 16:11:51 -0700 (PDT), Mark cleary wrote: So COVID has shot the groupsets of Shimano. I am not a dura-ace person and I still shift with cables. Are they going to be making or shipping Ultegra or 105 stuff. Maybe it all is dried but and in the end looking for it will never come. I would even go to a disk brake set up if I could find 105 stuff. I have Ultegra now but frankly 105 is just as good. Deacon mark While you're waiting, you might consider making your own parts (and selling extra parts to others in your situation). For example: https://stlbase.com/browse/bicycle+shimano/ https://www.yeggi.com/q/shimano/ Unfortunately, making the stamped steel cassette gears will probably be too difficult. However, it might be possible to use a water jet cutter to make the chainrings. https://www.google.com/search?tbm=isch&q=waterjet+cutter+bicycle+chainrin g Mo https://www.google.com/search?q=3d+printed+bicycle+parts&tbm=isch A bit more seriously: I've sometimes thought it would be nice to have access to a CNC mill, to refurbish freewheel cogs. It would keep my ancient SunTour freewheels going. Is that even possible? Any material removal just reduces the root diameter, right? -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 You beat me to it Andy. I was thinking the exact same thing when I read Frank's post. What good would a mill do you since it removes material. Grinds steel away. With cassette or freewheel cogs, the chain has ground off metal through use. So how would a mill grinding more material off help anything. Unless you were going to use the mill to grind, make, all new freewheel cogs and then disassemble and reassemble the freewheel. But I think you are getting close to the cure cancer and end hunger and peace in the world category at that point. I've heard freewheels are not something human beings disassemble and repair the internals. At least not sane ones. |
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